/**
 * Used to parse the .env.development proxy configuration
 */
import type {ProxyOptions} from 'vite';

type ProxyItem = [string, string];

type ProxyList = ProxyItem[];

type ProxyTargetList = Record<string, ProxyOptions & {rewrite?: (path: string) => string}>;

const httpsRE = /^https:\/\//;

/**
 * Generate proxy
 * @param list
 */
export function createProxy(list: ProxyList = []) {
    const ret: ProxyTargetList = {};

    for (const [prefix, target] of list) {
        const isHttps = httpsRE.test(target);

        // https://github.com/http-party/node-http-proxy#options
        ret[prefix] = {
            target: target,
            changeOrigin: true,
            ws: true,
            rewrite: (path) => path.replace(new RegExp(`^${prefix}`), ''),
            // https is require secure=false
            ...(isHttps ? {secure: false} : {})
        };
    }
    return ret;
}
